Mary
- Jaar: 1931
- Land: United Kingdom, Germany
- Genre: Mystery, Crime, Thriller
- Studio: British International Pictures, Südfilm
- Sleutelwoord: black and white
- Direkteur: Alfred Hitchcock
- Gooi: Alfred Abel, Olga Tschechowa, Paul Graetz, Lotte Stein, Ekkehard Arendt, Jack Mylong-Münz